I love, love, LOVE avocado skin dyeing! I have done it numerous times, and usually have a batch in the fridge. For the best pink, pick avocados that look reddish rather than greenish. Also, silk works even better than cotton. And you don't need the sun. In fact, I'm not sure how permanent and light fast it is as a dye, which is actually an aspect I like. Also, I have gotten all different shades of pink, and even an orange color once!

It looks particularly nice when paired with the purpleblueindigo you get from black bean soaking liquid. And then you can use the food part for tacos!